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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2014-08-09 01:21:35 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 02:57:22 +0400 |
| commit | f9ea536ef80d7b3ce531943e2c6aae7c0fedd9bd (patch) | |
| tree | aedd1005f8b4ac16cfa167a223c76b28aa56ad6d | |
| parent | cedbccab8bb104a1e2d6b40e3db2159b30c6cd76 (diff) | |
| download | linux-f9ea536ef80d7b3ce531943e2c6aae7c0fedd9bd.tar.xz | |
proc: convert /proc/$PID/auxv to seq_file interface
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/proc/base.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 0e76895f47f5..154bbd353b10 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -205,22 +205,20 @@ static int proc_pid_cmdline(struct task_struct *task, char *buffer) return get_cmdline(task, buffer, PAGE_SIZE); } -static int proc_pid_auxv(struct task_struct *task, char *buffer) +static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task) { struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ); - int res = PTR_ERR(mm); if (mm && !IS_ERR(mm)) { unsigned int nwords = 0; do { nwords += 2; } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */ - res = nwords * sizeof(mm->saved_auxv[0]); - if (res > PAGE_SIZE) - res = PAGE_SIZE; - memcpy(buffer, mm->saved_auxv, res); + seq_write(m, mm->saved_auxv, nwords * sizeof(mm->saved_auxv[0])); mmput(mm); - } - return res; + return 0; + } else + return PTR_ERR(mm); } @@ -2557,7 +2555,7 @@ static const struct pid_entry tgid_base_stuff[] = { DIR("net", S_IRUGO|S_IXUGO, proc_net_inode_operations, proc_net_operations), #endif REG("environ", S_IRUSR, proc_environ_operations), - INF("auxv", S_IRUSR, proc_pid_auxv), + ONE("auxv", S_IRUSR, proc_pid_auxv), ONE("status", S_IRUGO, proc_pid_status), ONE("personality", S_IRUSR, proc_pid_personality), INF("limits", S_IRUGO, proc_pid_limits), @@ -2896,7 +2894,7 @@ static const struct pid_entry tid_base_stuff[] = { DIR("fdinfo", S_IRUSR|S_IXUSR, proc_fdinfo_inode_operations, proc_fdinfo_operations), DIR("ns", S_IRUSR|S_IXUGO, proc_ns_dir_inode_operations, proc_ns_dir_operations), REG("environ", S_IRUSR, proc_environ_operations), - INF("auxv", S_IRUSR, proc_pid_auxv), + ONE("auxv", S_IRUSR, proc_pid_auxv), ONE("status", S_IRUGO, proc_pid_status), ONE("personality", S_IRUSR, proc_pid_personality), INF("limits", S_IRUGO, proc_pid_limits), |